[TenTec] Argonaut V/516 Supply Voltage sensitivity. >=12.0Vdc

[Thomas Jednacz]

Do not dispare! Here is the solution. The 706 and the FT-100 both have the
same problem. I found a battery booster that solves the problem and works
GREAT. W4RRY at L&L Electronics has a battry booster made for just this
occation. His e-mail is W4RRY@fastq.com - he has advertisements in World
Radio magazine.

I found that I can have the battery as low as 10 volts and not have a
problem with the rig.

Tom, W7QF

-----Original Message-----
From: tentec-admin@contesting.com [mailto:tentec-admin@contesting.com]On
Behalf Of Ron McConnell
Sent: Friday, November 01, 2002 12:53 PM
To: tentec@contesting.com; Ten-Tec Argo V/516; HFPack; QRP-L; QRPp-I
Cc: Leo W4RRY Lehner; W2IOL; n4uau@arrl.net
Subject: [TenTec] Argonaut V/516 Supply Voltage sensitivity. >=12.0Vdc



"...12.1 v at which point the signal has a
pronounced chirp on CW."

"...audio becomes distorted also..."

And finally,
Ten-Tec says, "...12V is the lower limit..."

  (sigh)

I still plan to get an Argonaut V/516,
but I am a bit disappointed in this outcome.
My plans are to shift the SGC SG-2020
to full time portable/mobile use
because of its rugged, brick-like construction
and use the Argonaut V for my desk rig.

My main complaint with the SG-2020 is that
it is not small (12Vdc, 7AH) gel-cell battery
friendly, even at qrp xmit levels.
Any momentary slip below 12.0Vdc results
in distortion. Now it seems the Argonaut V
has the same characteristics.  I use a
17AH battery for home that I keep on float,
so hopefully the Argo V will be happy.
I expected that with all the DSP horsepower
that 4AH batteries or smaller probably
would not be realistic, but 7AH or even larger?.

For the SG-2020, I ended up using one of
W4RRY's battery boosters to keep the voltage
at 13.8Vdc.  http://www.fastq.com/~w4rry/
When I get around to using the Argo V portable,
it looks like it will be better off with a boost, too.

73,

Ron McConnell
w2iol




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